si: Make sure to not overwrite orig_arfcn_hi in the range encoding
Andreas highlighted that the doubel assignment is not needed and
wrong. Change the code to assign chan_list[0] before writing the
base frequency to the header. Update the testcase to make the highest
bit set and update the test result.
diff --git a/openbsc/tests/si/si_test.ok b/openbsc/tests/si/si_test.ok
index 6c4b028..6a3ee51 100644
--- a/openbsc/tests/si/si_test.ok
+++ b/openbsc/tests/si/si_test.ok
@@ -17,4 +17,4 @@
w[13]=64
w[14]=70
w[15]=9
-Range512: 88 4b 2a 95 65 95 55 2c a9 55 aa 55 6a 95 59 55
+Range512: 89 4b 2a 95 65 95 55 2c a9 55 aa 55 6a 95 59 55